minor symfony#59149 [TypeInfo] Fix outdated README (mtarld)

This PR was merged into the 7.2 branch.

Discussion
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[TypeInfo] Fix outdated README

| Q             | A
| ------------- | ---
| Branch?       | 7.2
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Issues        |
| License       | MIT

Fix TypeInfo's `README.md` by updating usage examples

Commits
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34d30c7 [TypeInfo] Fix outdated README

Author: fabpot

src/Symfony/Component/TypeInfo/README.md

@@ -15,6 +15,7 @@ composer require phpstan/phpdoc-parser # to support raw string resolving
 <?php
 
 use Symfony\Component\TypeInfo\Type;
+use Symfony\Component\TypeInfo\TypeIdentifier;
 use Symfony\Component\TypeInfo\TypeResolver\TypeResolver;
 
 // Instantiate a new resolver
@@ -27,10 +28,21 @@ $typeResolver->resolve('bool'); // returns a "bool" Type instance
 // Types can be instantiated thanks to static factories
 $type = Type::list(Type::nullable(Type::bool()));
 
-// Type instances have several helper methods
-$type->getBaseType(); // returns an "array" Type instance
-$type->getCollectionKeyType(); // returns an "int" Type instance
-$type->getCollectionValueType()->isNullable(); // returns true
+// Type classes have their specific methods
+Type::object(FooClass::class)->getClassName();
+Type::enum(FooEnum::class, Type::int())->getBackingType();
+Type::list(Type::int())->isList();
+
+// Every type can be cast to string
+(string) Type::generic(Type::object(Collection::class), Type::int()) // returns "Collection<int>"
+
+// You can check that a type (or one of its wrapped/composed parts) is identified by one of some identifiers.
+$type->isIdentifiedBy(Foo::class, Bar::class);
+$type->isIdentifiedBy(TypeIdentifier::OBJECT);
+$type->isIdentifiedBy('float');
+
+// You can also check that a type satifies specific conditions
+$type->isSatisfiedBy(fn (Type $type): bool => !$type->isNullable() && $type->isIdentifiedBy(TypeIdentifier::INT));
 ```
 
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